Christian apologist and writer Ravi Zacharias addressed 3,500 evangelicals and Mormons at the LDS Tabernacle in Salt Lake City, Utah, asking that people from the two faiths stand together to oppose "relativism" and "lost morality."

The two-day "Freedom and Friendship" event held last Friday and Saturday marked the second time that Zacharias had spoken at the Tabernacle. The apologist's first meeting occurred 10 years ago, when he became the first non-Mormon speaker in the Tabernacle in 105 years.

Zacharias' focused on how Christians and Mormons should make sense of a culture that increasingly relies on a "pragmatic philosophy with no accountability," during his talk on Saturday. more >>

Christians, including those from numerous denominations, from across the world are set to observe a time of prayer for the unity of the faith.

The annual "Week of Prayer for Christian Unity" begins this Saturday and continues for the next seven days. Catholics, Protestants, and Orthodox will hold various events centered on praying for the unity of the Christian faith.

If you studied a map of Christianity in 1900, eight of 10 Christians could be found in Europe and North America. But today, the numbers in those continents are set to be dwarfed later this century by Africa and South America where there are 411 and 517 million Christians, respectively.

The Pew Research Center, a polling institute that studies religion globally and has been studying Christianity's demographic changeups, has released a short poll on its website where test-takers can see how well they have kept up with the global expansion of Christianity.